Be Wary of Using Poisson Regression to Estimate Risk and Relative Risk

Zhu, Chao; Blizzard, Leigh; Stankovich, J; Wills, Kellie; Hosmer, DW

doi:10.19080/bboaj.2018.04.555649

Cited by 6 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As for binary outcomes, to avoid the issue of poor performance of the model in case of solutions near the boundary described in Zhu et al [45], Poisson regression models with robust standard errors, having the variable "intervention allocation," each variable separately, and its interaction with treatment as regressors, were performed using the Bonferroni correction to take multiple testing into account. Originally, further analyses stratifying by method of assessment (face-to-face vs. telephone or secure online audio/video communication) were planned.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of Self-Help Plus in Preventing Mental Disorders in Refugees and Asylum Seekers in Western Europe: A Multinational Randomized Controlled Trial

Purgato

Carswell

Tedeschi

et al. 2021

Psychother Psychosom

View full text Add to dashboard Cite

Introduction: Self-Help Plus (SH+) is a group-based psychological intervention developed by the World Health Organization for managing stress. Objective: To assess the effectiveness of SH+ in preventing mental disorders in refugees and asylum seekers in Western Europe. Methods: We conducted a randomized controlled trial in 5 European countries. Refugees and asylum seekers with psychological distress (General Health Questionnaire score ≥3), but without a Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5) or ICD/10 diagnosis of mental disorder, as assessed with the Mini International Neuropsychiatric Interview (MINI), were randomized to SH+ or enhanced treatment as usual (ETAU). The primary outcome was the frequency of mental disorders with the MINI at 6 months. Secondary outcomes included the frequency of mental disorders at postintervention, self-identified problems, psychological symptoms, and other outcomes. Results: Four hundred fifty-nine individuals were randomly assigned to SH+ or ETAU. For the primary outcome, we found no difference in the frequency of mental disorders at 6 months (Cramer V = 0.007, p = 0.90, RR = 0.96; 95% CI 0.52–1.78), while the difference significantly favored SH+ at after the intervention (secondary outcome, measured within 2 weeks from the last session; Cramer V = 0.13, p = 0.01, RR = 0.50; 95% CI 0.29–0.87). Conclusions: This is the first randomized indicated prevention study with the aim of preventing the onset of mental disorders in asylum seekers and refugees in Western Europe. As a prevention effect of SH+ was not observed at 6 months, but rather after the intervention only, modalities to maintain its beneficial effect in the long term need to be identified.

show abstract

Section: Discussionmentioning

confidence: 99%

Effectiveness of Self-Help Plus in Preventing Mental Disorders in Refugees and Asylum Seekers in Western Europe: A Multinational Randomized Controlled Trial

Purgato

Carswell

Tedeschi

et al. 2021

Psychother Psychosom

View full text Add to dashboard Cite

show abstract

“…A Poisson regression model with robust variance estimation was used to assess factors associated with the outcome variable. The Poisson regression analysis model is an appropriate analytical model for estimating the prevalence ratio (PR) in crosssectional studies binary and common outcomes (34). The backward regression was fitted with selected explanatory variables.…”

Section: Data Management and Analysismentioning

confidence: 99%

Sedentary Behavior and Associated Factors Among Working Adults in Eastern Ethiopia

Motuma

Gobena

Roba

et al. 2021

Front. Public Health

View full text Add to dashboard Cite

Background: Sedentary behavior is a major risk factor for non-communicable diseases. Due to changes in lifestyle, sedentary behavior is increasing in sub-Saharan Africa. However, information on the extent of sedentarism among various segments of the population is scant in low-income countries. The objective of this study was to assess the extent of high sedentary behavior and associated factors among working adults in eastern Ethiopia.Methods: A crosssectional study was conducted among 1,164 working adults at Haramaya University from December 2018 to February 2019. Data were collected through face-to-face interviews using the WHO STEPS and sedentary behavior questionnaire. All reported sedentary activities were added to calculate the total number of hours spent on sedentary behavior, which was then dichotomized into two categories. Those who had ≥8 sedentary hours per day were categorized as having high sedentary behavior. The prevalence ratio (PR) with 95% confidence intervals (CIs) was calculated. Factors associated with outcome variables were identified using Poisson regression with a robust variance statistical model.Results: The prevalence of high sedentary behavior was 20.3% (95% CI, 18.0–22.7%) among the study participants. The prevalence of high sedentary behavior was associated with age 45–54 years adjusted PR (APR: 2.00; 95% CI = 1.01–3.97) and 55–64 years (APR: 2.16; 95% CI = 1.03–4.57), being a non-manual worker (APR: 2.11; 95% CI = 1.46–3.05), frequent khat chewers (APR: 1.57; 95% CI = 1.22–2.01), with body mass index of ≥25 kg/m2 (APR: 1.93; 95% CI = 1.53–2.44), and regular alcohol drinker (APR: 1.39; 95% CI = 1.11–1.76).Conclusion: One-fifth of working adults had high sedentary behavior. Factors associated with high sedentary behaviors were older age, being a non-manual worker, substance-use behaviors, and having a high body mass index.

show abstract

Calculating risk and prevalence ratios and differences in R: developing intuition with a hands-on tutorial and code

Yorlets

Lee

Gantenberg

2023

Annals of Epidemiology

View full text Add to dashboard Cite

Be Wary of Using Poisson Regression to Estimate Risk and Relative Risk

Cited by 6 publications

References 8 publications

Effectiveness of Self-Help Plus in Preventing Mental Disorders in Refugees and Asylum Seekers in Western Europe: A Multinational Randomized Controlled Trial

Effectiveness of Self-Help Plus in Preventing Mental Disorders in Refugees and Asylum Seekers in Western Europe: A Multinational Randomized Controlled Trial

Sedentary Behavior and Associated Factors Among Working Adults in Eastern Ethiopia

Calculating risk and prevalence ratios and differences in R: developing intuition with a hands-on tutorial and code

Contact Info

Product

Resources

About